1999 volts wagon passat just put new oil in it ,,,,,oil pressure i hooked a gauge up and it runs at about 45 to 50 pounds and when i stop to turn around it falls to 25 pounds and when i take back off it goes back to 50 pounds and when i coast down a big hill it also falls to 25 pounds

you might need to no this,that ifirst put 5 quarts in it ran it about 200 miles and the oil light came on and i read the book where it said that the car take 4 .3 quarts so i drained a quart out and the light went off and drove it about 20 miles and the light came back on so then i change the oil and just put 4 quarts in it and the light came back on in 20 miles and then thats when i hooked up the oil pressure gauge,, so did to much oil hurt something?or any more suggestionsyou might need to no this,that ifirst put 5 quarts in it ran it about 200 miles and the oil light came on and i read the book where it said that the car take 4 .3 quarts so i drained a quart out and the light went off and drove it about 20 miles and the light came back on so then i change the oil and just put 4 quarts in it and the light came back on in 20 miles and then thats when i hooked up the oil pressure gauge,, so did to much oil hurt something?or any more suggestions

Hi. Due to the fact that the oil level is fine, This will indicate that there may be some sludge build up in the block, or the oil pressure switch is damaged. The more serious issue will be a failing oil pump. To isolate the issue, simply, have a oil pressure test ran on this engine. If the test indicates that the true oil pressure is optimal at idle, kindly replace the oil pressure switch. Now, if the test proves that the pressure is indeed lower than factory specifications, this will confirm that the pump is damaged. Have the pump, and oil pump screen replaced, in this case.

Ok, the overfilling of the bock has damaged the oil pressure switch and pump. When you overfill, this will cause an unbelievable amount of stress on the pump and switch(sender). This in return will damage the pressure switch and overdrive the pump gear, thus preventing the proper transfer of optimal oil pressure through the sender to the actual Gauge(instrument). the necessary actions are to replace the oil pump, and replace the sender(pressure switch), as well. The screen should be ok. This Willcorrect the problem.

Remember to not over fill in the future, this ca be an expensive mistake.

Ok, the overfilling of the bock has damaged the oil pressure switch and pump. When you overfill, this will cause an unbelievable amount of stress on the pump and switch(sender). This in return will damage the pressure switch and overdrive the pump gear, thus preventing the proper transfer of optimal oil pressure through the sender to the actual Gauge(instrument). the necessary actions are to replace the oil pump, and replace the sender(pressure switch), as well. The screen should be ok. This Willcorrect the problem.

Remember to not over fill in the future, this ca be an expensive mistake.

1 Suggested Answer

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.goodluck!

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

Related Questions:

Low oil pressure is often an indication that your crank shaft and/or camshaft bearings are worn out (on high mileage cars).

Have you actually measured (with an oil pressure gauge, NOT the oi pressure switch) the oil pressure to verify that you are dealing with actual low pressure, of just a faulty signal (from the oil pressure switch)?

Ok, first thing to do is to spend the $10 for a manual oil pressure gauge, available at any parts store. Hook the gauge up to the port where the oil pressure sender is, and see if it acts the same way as your original gauge did. You can even place it inside the car if you wish, mounting it either permanently or temporarily, whatever your wish is. You may need an adapter to make it fit the port, available at the store that you bought the gauge from. If it doesn't act the same, you have the choice of keeping the added gauge, or having your instrument cluster checked out and repaired(which can get expensive). If you are indeed having oil pressure issues, then you could be suffering from a filter that's too restrictive, a faulty oil pump, or need to go to a thicker oil, given the higher mileage on your car.

I would check the oil pressure sensor and the oil pump itself. You can take the sensor out and use a mechanical gauge to check the oil pressure. If the oil pressure is within specs, you need a new sensor, if not, you need a new pump.

Just a idea. If the car is running at idle and the oil light blinks , it usually from low oil pressure. At a idle your seeing the light respond to the revolutions of the engine. ! thing to try is to replace the oil pressure switch on the engine block. And #2, Most causes in a VW is that the vehicle overheated at one time and weekend the oil pump,or massive amount of miles.